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4. Amylase is an enzyme found in saliva that helps break down starches into glucose. Which of
these statements best describes how amylase starts this reaction?
A. Amylase binds to the glucose to start the reaction.
B. Amylase provides extra energy to start the reaction.
C. Amylase decreases the energy needed to start the reaction.
D. Amylase changes the shape of the starch to start the reaction.

Respuesta :

Answer:

C

Explanation:

Amylase lowers the activation energy, which is the minimum energy required to activate atoms/molecules so a reaction proceeds spontaneously, of the hydrolysis reaction. The enzyme contorts the bonds of the starch molecule such that they become unstable and of higher energy state. The glycosidic bonds between the glucose in the starch molecule are, therefore, ‘forced’ to break so as to acquire a lower energy state.